@misc{indiciae04d0baa5f109, title = {George Engelmann : botanical notebook 45 : Polyanthus, Sagittaria, Echinodorus, Najadaceae, Najas, Potamogetonaceae, Cyperaceae, Gramineae — Illustration, [No.] 10053}, url = {https://www.biodiversitylibrary.org/page/55904696}, note = {Source identifier: page-55904696} }